Renal Dosage Adjustment Guidelines for Antimicrobials The pharmacists will automatically adjust the doses of any of the antimicrobials included in the protocol according to the estimated creatinine clearance (generally using the Cockroft-Gault equation for patients ≥ 18 years old and the Schwartz equation for patients < 18 years old). This protocol does NOT include patients in the neonatal intensive care unit. For other pediatric patients less than 1 year of age the pharmacist must discuss the dose adjustment with the medical team who initiated the order. When a change is necessary, the pharmacist will write a new order in the Orders section of the medical record indicating the new dosage “per protocol” and enter the order in Carecast as a protocol (“P”) order. No physician signature will be required to authorize the revised dosing order. The adjustments listed in the dosing guidelines will be made unless the physician writes “Do not adjust” when ordering the antimicrobial. For vancomycin and the aminoglycosides, a pharmacokinetic consult will be performed by the pharmacist, and the ordering physician will be contacted for dosage changes unless ordered as “pharmacy to dose.” If written as “pharmacy to dose” dosing will be ordered by the pharmacist. The most current version of the Renal Dosage Adjustment Guidelines for Antimicrobials and associated antimicrobial policies can be found online at the antimicrobial stewardship program (ASP) website: www.nebraskamed.com/asp Please note:

• If there are no clear recommendations available, the pharmacist will not perform any automatic dosage adjustment. Consult with the physician.

• Accurate estimation of creatinine clearance and glomerular filtration rate from the Cockroft-Gault and Schwartz equations require serum creatinine concentrations to be at steady-state. Acute changes in renal function (indicated by changes in urine output & serum creatinine) render the Cockroft-Gault and Schwartz equations unreliable as serum creatinine is a delayed indicator of renal function. Furthermore, CrCl calculations may be significantly overestimated in patients with decreased muscle mass (e.g. elderly, paralysis). The pharmacist should use their clinical judgment regarding these changes and communicate their recommendations with the team as appropriate.

• Inclusion of an agent within this guideline does not necessarily indicate TNMC formulary status

Antimicrobial Normal Dose Renal Dosage Adjustment Based on CrCl Estimate (in ml/min)*

Abacavir (ABC) Adult 600 mg PO q24h or 300 mg PO q12h Pediatric 8 mg/kg PO q12h

No adjustment necessary.

Acyclovir Adult PO 200 mg PO 5x/day 400 mg PO 5x/day 800 mg PO 5x/day 400 mg PO q12h IV Mucocutaneous

CrCl 0-10: same dose q12h CrCl 11-25: same dose q8h CrCl 0-10: same dose q12h CrCl 11-25: same dose q8h CrCl 0-10: same dose q12h CrCl 0-10: 200 mg PO q12h

5 mg/kg IV q8h Immunocompromised: 6.2 mg/kg q8h HSV encephalitis or varicella zoster virus 10 mg/kg IV q8h Immunocompromised: 12.4 mg/kg IV q8h - - - - - - - - - - - - - - - - - - - - - - Pediatric PO 6.25-20 mg/kg PO q6h IV 15-20 mg/kg IV q8h

CrCl 25-50: same dose q12h CrCl 10-24: same dose q24h CrCl <10: 2.5-3.1 mg/kg IV q24h CrCl 25-50: same dose q12h CrCl 10-24: same dose q24h CrCl <10: 5-6.2 mg/kg IV q24h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: dose as CrCl <10 - - - - - - - - - - - - - - - - - - - - - CrCl 10-25: same dose q8h CrCl <10: same dose q12h CrCl 25-50: same dose q12h CrCl 10-24: same dose q24h CrCl <10: 50% IV q24hŦ HD/CAPD: No data.

Amantadine Adult 100 mg PO q12h or 200 mg daily - - - - - - - - - - - - - - - - - - - - - - Pediatric 1-9 years: 5 mg/kg/day PO in 2 divided doses (maximum dose: 150 mg/day) ≥10 years and < 40 kg: 5 mg/kg/day PO in 2 divided doses (maximum dose: 150 mg/day) ≥10 years and ≥40 kg: 100 mg PO q12h

CrCl 30-50: Administer 200 mg on day 1, then 100 mg/day CrCl 15-29: Administer 200 mg on day 1, then 100 mg on alternate days CrCl <15: Administer 200 mg every 7 days HD: Administer 200 mg every 7 days CAPD: No supplemental dose is needed. - - - - - - - - - - - - - - - - - - - - - No clear recommendations.

Amikacin Adult Extended interval dosing (most indications*): 15 mg/kg once daily

• adjusted by serum level 6-14 hrs after start of infusion and Hartford nomogram (see PK training packet on ASP website§)

10 mg/kg/day may be used for UTIs

Extended interval dosing frequency determined by levels/Hartford nomogram

- - - - - - - - - - - - - - - - - - - - - - Traditional dosing 5 mg/kg IV q8h Monitoring of serum levels is recommended. *Refer to TNMC PK training packet on ASP website§ for exclusions to extended-interval dosing - - - - - - - - - - - - - - - - - - - - - - Pediatric Traditional dosing 5 mg/kg IV q8h

- - - - - - - - - - - - - - - - - - - - - - Traditional dosing (empiric, before levels): CrCl 51-90: 60-90% IV q12hŦ CrCl 10-50: 30-70% IV q12-18hŦ CrCl <10: 20-30% IV q24-48hŦ HD/CAPD: Dose according to levels.

Amoxicillin Adult 250-1000 mg PO q8h Pediatric 12.5-25 mg/kg PO q8-12h (25-90 mg/kg/day) AOM: 90 mg/kg/day PO divided q8-12h

Same for Adult & Pediatric CrCl 10-30: same dose q12h CrCl <10: same dose q24h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: 250 mg PO q12h

Amoxicillin/clavulanate Adult 500/125 mg PO q8h 875/125 mg PO q12h 1000/62.5 mg PO q12h (XR formulation) - - - - - - - - - - - - - - - - - - - - - - Pediatric 15-45 mg (amoxicillin component)/kg 12h AOM: 22.5-45 mg/kg q12h [30-90 mg (amoxicillin component)/kg/day]

CrCl 10-30: 250/125 mg PO q12h CrCl <10: 250/125 mg PO q24h CrCl 10-30: 500/125 mg PO q12h CrCl <10: 500/125 mg PO q24h XR formulation NOT recommended with CrCl < 30. HD: Dose as daily CrCl <10. Give after dialysis on dialysis days. CAPD: 250/62.5 mg PO q12h - - - - - - - - - - - - - - - - - - - - - CrCl 10-30: same dose q12h CrCl <10: same dose q24h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: No clear recommendations.

Amphotericin B deoxycholate Adult & Pediatric 0.7-1 mg/kg IV q24h

No adjustment necessary

Amphotericin B Liposomal Adult & Pediatric 3 mg/kg IV q24h (Automatic dose substitution to 3 mg/kg, refer to policy on ASP website§)

No adjustment necessary

Ampicillin Adult PO 250-1000 mg PO q6h IV 1-2 g IV q4-6h

PO CrCl <10: same dose q12h IV CrCl 30-50: same dose q8h

- - - - - - - - - - - - - - - - - - - - - - Pediatric PO 12.5-25 mg/kg PO q6h IV 25-100 mg/kg IV q6h

CrCl <30: same dose q12h HD: Dose as CrCl <10. Give after dialysis on dialysis days. CAPD: 250 mg PO/IV q12h - - - - - - - - - - - - - - - - - - - - - PO/IV CrCl <10: same dose q12h HD: Dose as CrCl <10. Give after dialysis on dialysis days. CAPD: No clear recommendations.

Ampicillin/sulbactam Adult 1.5-3 g IV q6h - - - - - - - - - - - - - - - - - - - - - - Pediatric 25-100 mg (ampicillin component)/kg IV q6h

CrCl 30-50: same dose q8h CrCl 15-29: same dose q12h CrCl <15: same dose q24h HD: Dose daily as CrCl <15. Give after dialysis on dialysis days. CAPD: Dose as CrCl <15. - - - - - - - - - - - - - - - - - - - - - CrCl 15-29: same dose q12h CrCl <15: same dose q24h HD: Dose as daily CrCl <15. Give after dialysis on dialysis days. CAPD: Dose as CrCl <15.

Atazanavir (ATV) RTV=ritonavir PPI: proton pump inhibitor H2RA: histamine 2 receptor antagonist EFV: efavirenz TDF:tenofovir AUC: area under the curve

Naïve Adult ATV + RTV 300/100mg daily w/food Unable to tolerate RTV and/or on H2RA: ATV 400mg daily w/food With TDF, H2RA or PPI: ATV + RTV 300/100mg daily w/food With EFV: ATV+RTV: 400/100mg daily w/food Pediatric ≥6yr: 15-24kg; ATV+RTV 150/80mg daily; 25-31kg: 200/100mg daily; 32-38kg 250/100mg daily; ≥39kg 300/100mg daily w/food ≥13yr, ≥39kg and unable to tolerate RTV: ATV 400mg daily w/food Experienced Adult On H2RA: ATV + RTV 300/100mg daily w/food

No renal adjustment necessary. PPI contraindicated in treatment experienced patients (package labeling) due to decrease in AUC by 75%. In naïve patients PPI should not exceed 20 mg omeprazole/day or equivalent. PPI should be given 12 hours prior to ATV. H2RA dose should not exceed equivalent of famotidine 20 mg q12h. ATV/RTV should be administered simultaneously with or 10 hours after H2RA ATV 400 mg once daily should be administered at least 2 hours before and at least 10 hours after the H2RA

With TFV and H2RA: ATV+RTV 400/100mg daily w/food NOTE: PPI and EFV are contraindicated in treatment-experienced patients receiving atazanavir Pediatric ≥6yr: 25-31kg: ATV+RTV 200/100mg daily; 32-38Kg: 250/100mg daily; ≥39kg 300/100mg daily w/food

Atovaquone Adult & Pediatric (>13yo) 1500 mg PO divided q12-24h Pediatric 20 mg/kg PO q12h

No data.

Azithromycin Adult 250-500 mg PO/IV q24h Pediatric 5-10 mg/kg PO q24h

No adjustment necessary. Caution advised if CrCl < 10 (AUC increased by 35%).

Aztreonam Adult 1 g IV q8h Anti-pseudomonal/moderate-severe infection: 2 gm IV q8hr - - - - - - - - - - - - - - - - - - - - - - Pediatric 30-60 mg/kg IV q6-8h

CrCl 10-30: same dose IV q12h CrCl <10: same dose IV q24h HD: Dose daily as for CrCl <10 and administer after dialysis on dialysis days. CAPD: Dose as CrCl <10. - - - - - - - - - - - - - - - - - - - - - CrCl 10-30: 50% IV at same intervalŦ CrCl <10: 25% IV at same intervalŦ HD: Dose as for CrCl <10 with an extra 3.25-7.5 mg/kg IV after dialysis. CAPD: Dose as CrCl <10.

Cefazolin Adult 2 g IV q8h (All Gram-negative infections, S. aureus bloodstream infections, moderate-severe infections, patients >80kg) 1 g IV q8h (surgical prophylaxis for patients <80kg, simple urinary tract infections) - - - - - - - - - - - - - - - - - - - - - - Pediatric 16.7-50mg/kg IV q8h

CrCl 10-50: same dose q12h CrCl <10: 1-2 g q24h HD: 1 gm IV q24hr, administered after HD -OR- 2 gm (~20 mg/kg) IV after each HD three times weekly CAPD: 500 mg IV q12h - - - - - - - - - - - - - - - - - - - - - CrCl 10-30: same dose q12h CrCl <10: same dose q24h HD: 2.5-7.5 mg/kg IV given only after dialysis. CAPD: No adjustment necessary.

Cefepime Refer to dosing protocol on ASP website§

Adult 1 g IV q6h

CrCl 30-50: 1 g IV q8h CrCl 10-29: 1 g IV q12h CrCl <10: 1 g IV q24h

---------------------------------------------- Febrile Neutropenia: 2 g IV q8hr ----------------------------------------------- Mild-moderate UTI or community-acquired pneumonia not caused by P. aeruginosa: 1 g IV q12hr - - - - - - - - - - - - - - - - - - - - - - Pediatric Pediatric ≥ 40 kg: see adult dose Pediatric <40 kg: 50 mg/kg IV q8-12h

-------------------------------------- CrCl 30-50: 2 g IV q12h CrCl 10-29: 1 g IV q12h CrCl <10: 1 g IV q24h --------------------------------------- CrCl 10-50: 1 g IV q24h CrCl <10: 500 mg IV q24h HD: Dose daily as CrCl <10. Administer after dialysis on dialysis days. CAPD: Dose for CrCl <10. - - - - - - - - - - - - - - - - - - - - - CrCl 10-50: same dose q12 (for q8h dosing)-q24h (for q12h dosing) CrCl <10: 50% q24hŦ HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: 50 mg/kg IV q48h

Cefotaxime Adult 1-2 g IV q8h (Therapeutic interchange to ceftriaxone in adults, see cephalosporin therapeutic interchange policy) - - - - - - - - - - - - - - - - - - - - - - Pediatric 25-100mg/kg IV q6-8h (100-200mg/kg/day)

CrCl 10-50: same dose q12h CrCl <10: same dose q24h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: 1 g IV q24h - - - - - - - - - - - - - - - - - - - - - CrCl <20: same dose q24h HD: Dose daily as CrCl <20. Give after dialysis on dialysis days. CAPD: 50-100 mg/kg IV q24h

Cefoxitin Adult 1-2 g IV q8h For coverage of Enterobacteriaceae (E. coli, Klebsiella sp. Proteus sp. etc.): 2 g IV q6h - - - - - - - - - - - - - - - - - - - - - - Pediatric 20-40mg/kg IV q6h

CrCl 10-30: same dose q12h CrCl <10: same dose IV q24h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: 1 g IV q24h - - - - - - - - - - - - - - - - - - - - - CrCl 51-90: same dose q8h CrCl 10-50: same dose q12h CrCl <10: same dose q24-48h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: No clear recommendations.

Ceftazidime Adult 1 g IV q8h Anti-pseudomonal dosing: 2 gm IV q8hr - - - - - - - - - - - - - - - - - - - - - - Pediatric 30-50 mg/kg IV q8h

CrCl 10-30: same dose q12h CrCl <10: 1 gm q24h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: 1 g IV x1, then 500 mg IV q24h - - - - - - - - - - - - - - - - - - - - - CrCl 30-50: same dose q12h CrCl 10-29: same dose q24h CrCl <10: same dose q48h HD: Dose as CrCl <10. Give after dialysis on dialysis days. CAPD: 30-75 mg/kg IV x1, then 50% q24hŦ

Ceftriaxone Adult 1 g IV q24h Patients >80 kg: 2 g IV q24h Meningitis: 2 g IV q12h - - - - - - - - - - - - - - - - - - - - - - Pediatric 25-100mg/kg IV q12-24h (50-100mg/kg/day)

No adjustment necessary. CAPD: 1 g IV q12h - - - - - - - - - - - - - - - - - - - - - No adjustment necessary.

Cefuroxime Adult PO 250-500 mg PO q12h IV 1.5 g IV q8h - - - - - - - - - - - - - - - - - - - - - - Pediatric PO Cefuroxime 10-15 mg/kg PO q12h IV 25-50mg/kg IV q8h

No adjustment necessary. CrCl 10-20: 1.5 gm IV q12h CrCl <10: 1.5 gm q24h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: Dose as CrCl <10. - - - - - - - - - - - - - - - - - - - - - No adjustment necessary. HD: Give after dialysis on dialysis days. CrCl 10-20: same dose q12h CrCl <10: same dose q24h HD: Dose daily as CrCl <10. Give after dialysis on dialysis days. CAPD: Dose as CrCl <10.

Cephalexin Adult 250 - 1000 mg PO q6h - - - - - - - - - - - - - - - - - - - - - - Pediatric 6.25-37.5 mg/kg PO q6h

CrCl 50-90: same dose PO q8h CrCl <50: same dose PO q12h HD: Dose as CrCl <50. Give after dialysis on dialysis days. CAPD: Dose as CrCl <50. - - - - - - - - - - - - - - - - - - - - - CrCl 10-40: same dose q8h CrCl <10: same dose q12h HD: Dose as CrCl <10. Give after dialysis on dialysis days. CAPD: Dose as CrCl <10.

Chloramphenicol Adult 12.5-25 mg/kg IV q6h Pediatric 6.25-25 mg/kg IV q6h

No adjustment necessary.

Ciprofloxacin Adult PO 250-750 mg PO q12h (consider 750mg q8h for pneumonia/severe infection) IV 400 mg IV q8-12h (q8h for pneumonia/severe infection) - - - - - - - - - - - - - - - - - - - - - - Pediatric PO 10-20 mg/kg PO q12h IV 10-15 mg/kg IV q8-12h

CrCl <30: same dose q24h HD/CAPD: Dose as CrCl <30 given after dialysis. CrCl <30: same dose q12 (for q8h regimen)-24h (for q12h regimen) HD/CAPD: Dose as CrCl <30 given after dialysis. - - - - - - - - - - - - - - - - - - - - - No clear recommendations.

Clarithromycin Adult 0.5 – 1 g PO q12h Pediatric 7.5 mg/kg PO q12h

Same for Adult & Pediatric CrCl <30: 50% PO q12hŦ HD: Dose as CrCl <30. Give after dialysis on dialysis days. CAPD: No adjustment necessary.

Clindamycin Adult PO 150-450 mg PO q6-8h IV Standard dose: 600 mg IV q8h Necrotizing fasciitis: 900 mg IV q8h

No adjustment necessary.

Pediatric PO 2.5-10 mg/kg PO q6-8h (10-30 mg/kg/day) IV 6.25-10 mg/kg IV q6-8h (25-40 mg/kg/day)

Colistin base IV Restricted to ID service or pulmonary service consultation

Adult 5 mg/kg/day (lesser of actual or ideal body weight) colistin base IV divided in 2-3 doses

Use loading dose in renal dysfunction: Loading dose: 2.5 mg/kg IV q12h x2 doses. Maintenance dosing begins 24 hours after first loading dose CrCl >40: no adjustment needed CrCl 20-40: 75% IV q12hŦ CrCl 10-19: 50% IV q12hŦ CrCl <10, HD/CAPD: 50 mg IV q12h (after HD on HD days) SLED: While on SLED dose as CrCl>40 While off SLED dose as CrCl<10 See colistin dosing and restriction document available on ASP website§

Colistin base Inhaled Restricted to ID service or pulmonary service consultation

Adult 75-150 mg inhaled q12h Pediatric 30-75 mg inhaled q12h

No adjustment necessary See colistin dosing and restriction document available on ASP website§

Dapsone Adult 50-100 mg PO q24h Pediatric 1-2 mg/kg PO q24h

No clear guidelines, but adjustment recommended.

Daptomycin Restricted to ID Service review and approval for non FDA-approved indications

Adult 6 mg/kg IV q24h UTI or skin/skin structure infection: 4 mg/kg IV q24h Safety and efficacy not established in pediatrics.

CrCl <30: same dose IV q48h HD: Dose as CrCl <30. Give after dialysis on dialysis days. CAPD: Dose as CrCl <30.

Darunavir (DRV) Naïve Adult DRV+RTV 800/100mg daily w/food Pediatric ≥6yrs; 20-29kg: DRV+RTV 375/50mg Q12H; 30-39Kg 450/60mg Q12H; ≥40kg 600/100mg Q12H Experienced Adult DRV+RTV 600/100mg Q12H w/food Pediatric No recommendations.

No adjustment necessary.

Dicloxacillin Adult 250-500 mg PO q6h Pediatric 6.25-12.5 mg/kg PO q6h

No adjustment necessary.

Didanosine (enteric coated, DDI EC)

Adult ≥60kg 400 mg EC PO q24h if given with TDF: 250 mg PO q24h <60 kg: 250 mg EC PO q24h if given with TDF: 200 mg PO q24h - - - - - - - - - - - - - - - - - - - - - - Pediatric 100-120 mg/m2 PO q12h

CrCl 30-59 & ≥60kg: 200 mg EC q24h CrCl 30-59 & <60kg: 125 mg EC q24h CrCl 10-29: 125 mg PO EC q24h CrCl <10, HD/CAPD: Dose as CrCl 10-29 and if patient is <60kg use oral solution instead of EC formulation - - - - - - - - - - - - - - - - - - - - - No clear recommendations except for HD. HD: 25% of total dose PO q24hŦ

Doxycycline Adult 100 mg PO/IV q12h Pediatric *not to be used in children < 8yo 1-4 mg/kg PO/IV q12-24h (2-4 mg/kg/day)

No adjustment necessary.

Efavirenz (EFV) Adult 600 mg PO QHS (avoid food) Pediatric 200-600 mg PO q24h

No adjustment necessary.

Emtricitabine (FTC) Adult: Capsule: 200 mg once daily Solution: 240 mg once daily - - - - - - - - - - - - - - - - - - - - - - Pediatric 0-3 months: Solution: 3 mg/kg/day 3 months to 17 years:

Capsule: Children >33 kg: 200 mg once daily

Solution: 6 mg/kg once daily; maximum: 240 mg/day

CrCl 30-49: Capsule: 200mg q48h; Solution: 120 mg q24h CrCl 15-29: Capsule: 200 mg q72h; Solution: 80 mg q24h CrCl <15: Capsule: 200 mg q96h; Solution: 60 mg q24h HD: Dose as CrCl <15. Give after dialysis on dialysis days. - - - - - - - - - - - - - - - - - - - - - No clear recommendations

Ertapenem Adult 1 g IV q24h - - - - - - - - - - - - - - - - - - - - - - Pediatric 15 mg/kg IV q12h

CrCl < 30: 500 mg IV q24h HD/CAPD: Dose as CrCl < 30 given after dialysis on dialysis days. - - - - - - - - - - - - - - - - - - - - - No clear recommendations.

Erythromycin Adult PO 250-500 mg PO q6-12h IV 15-20 mg/kg/day IV divided q6-8h Pediatric PO 7.5-16.7 mg/kg PO q6-8h (30-50 mg/kg/day) IV 3.75-12.5 mg/kg IV q6h

Same for Adult & Pediatric CrCl <10: 50% PO/IV at same interval.Ŧ HD/CAPD: Dose as CrCl <10.

Erythromycin/sulfisoxazole Adult 400 mg (erythromycin component) PO q6h Pediatric 10-16.7 mg (erythromycin component)/kg PO q6-8h [40-50 mg (erythromycin component)/kg/day]

No clear recommendations.

Ethambutol Adult 15-25 mg/kg PO q24h (max. dose 2.5 grams) Pediatric 15-25 mg/kg PO q24h (max. dose 2.5 grams)

Same for Adult & Pediatric CrCl 10-50: same dose PO q24-36h CrCl <10: same dose PO q48h HD: Give dose only after dialysis. CAPD: Dose as CrCl <10.

Etravirine (ETV) 200 mg PO q12h with food No adjustment necessary

Famciclovir Adult 500 mg PO q8h (varicella zoster virus) Safety and efficacy not established in pediatrics.

CrCl 40-59: same dose q12h CrCl 20-39: same dose q24h CrCl <20: 50% q24hŦ HD: 50% after each dialysis session.Ŧ CAPD: No clear recommendations.

Fluconazole Adult Invasive candidiasis (susceptible C. albicans, C. tropicalis, C. parapsilosis): 800 mg (12 mg/kg) load x1dose then 400 mg (6 mg/kg) PO/IV q24h Esophageal candidiasis: 200 mg PO/IV q24h Oropharyngeal candidiasis: 100 mg q24h - - - - - - - - - - - - - - - - - - - - - -

Invasive candidiasis: CrCl 10-29: 800 mg (12mg/kg) load x1dose then 50% PO/IV q24hŦ

CrCl <10: 800 mg (12 mg/kg) load x1dose then 25% PO/IV q24hŦ HD: 800 mg (12mg/kg) load x1dose then Then 400 mg (6 mg/kg) PO/IV after HD three times weekly CAPD: 50% PO/IV q24hŦ Esophageal/Oropharyngeal candidiasis: CrCl <30: 50% PO/IV q24hŦ

HD: 100% PO/IV after each dialysisŦ CAPD: 50% PO/IV q24hŦ - - - - - - - - - - - - - - - - - - - - -

Pediatric 3-12 mg/kg/day PO/IV q24h

CrCl 20-50: 50% PO/IV q24hŦ CrCl <20: 25% PO/IV q24hŦ HD: Give dose only after dialysis. CAPD: 25% PO/IV q24hŦ

Flucytosine Adult 50-150 mg/kg/day PO divided q6h - - - - - - - - - - - - - - - - - - - - - - Pediatric 25-37.5 mg/kg PO q6h

CrCl 10-50: same dose q12-24h CrCl <10: same dose q24h HD/CAPD: Give dose only after dialysis. - - - - - - - - - - - - - - - - - - - - - CrCl 20-40: same dose q12 CrCl 10-19: same dose q24h CrCl <10: same dose q48h HD/CAPD: Give dose only after dialysis.

Fosamprenavir (FPV) RTV = ritonavir EFV=efavirenz

ARV Naïve Adult FPV 1400mg q12h OR 1400mg + RTV 200mg daily OR 1400mg + RTV 100mg daily OR 700mg+ RTV 100mg q12h With EFV or NVP: 1400mg + RTV 300mg daily Pediatric 2-5yr: 30mg/kg q12h ≥6yr: 30mg/kg q12h OR FPV 18mg/kg+ RTV 3mg/kg q12h; (maximum dose: FPV 1400mg or RTV 200mg/day) ARV Experienced Adult FPV 700mg + RTV 100mg q12h Pediatric ≥6yr: FPV 18mg/kg + RTV 3mg/kg q12h (maximum dose: 1400mg+RTV 200mg/day)

No adjustment necessary.

Foscarnet Adult Mucocutaneous HSV: 40 mg/kg IV q8h Disseminated CMV, induction: 60 mg/kg IV q8h Disseminated CMV, maintenance: 90-120 mg/kg IV q24h

CrCl as ml/min/kg body weight CrCl >1.0-1.4: 30 mg/kg IV q8h CrCl >0.8-1.0: 35 mg/kg IV q12h CrCl >0.6-0.8: 25 mg/kg IV q12h CrCl >0.5-0.6: 40 mg/kg IV q24h CrCl 0.4-0.5: 35 mg/kg IV q24h CrCl <0.4: Not recommended. CrCl >1.0-1.4: 45 mg/kg IV q8h CrCl >0.8-1.0: 50 mg/kg IV q12h CrCl >0.6-0.8: 40 mg/kg IV q12h CrCl >0.5-0.6: 60 mg/kg IV q24h CrCl 0.4-0.5: 50 mg/kg IV q24h CrCl <0.4: Not recommended. CrCl >1.0-1.4: 70-90 mg/kg IV q24h CrCl >0.8-1.0: 50-65 mg/kg IV q24h CrCl >0.6-0.8: 80-105 mg/kg IV q48h CrCl >0.5-0.6: 60-80 mg/kg IV q48h

. - - - - - - - - - - - - - - - - - - - - - Pediatric Induction 60 mg/kg IV q8h Maintenance 90-120 mg/kg IV q24h 40-60 mg/kg IV q12h

CrCl 0.4-0.5: 50-65 mg/kg IV q48h CrCl <0.4: Not recommended. HD: 40-60 mg/kg IV after each dialysis session. - - - - - - - - - - - - - - - - - - - - - CrCl as ml/min/kg body weight Induction CrCl ≥ 1.6: 60 mg/kg/8h CrCl 1.5: 56.5 mg/kg/8h CrCl 1.4: 53 mg/kg/8h CrCl 1.3: 49.4 mg/kg/8h CrCl 1.2: 45.9 mg/kg/8h CrCl 1.1: 42.4 mg/kg/8h CrCl 1: 38.9 mg/kg/8h CrCl 0.9: 35.3 mg/kg/8h CrCl 0.8: 31.8 mg/kg/8h CrCl 0.7: 28.3 mg/kg/8h CrCl 0.6: 24.8 mg/kg/8h CrCl 0.5: 21.2 mg/kg/8h CrCl 0.4: 17.7 mg/kg/8h Maintenance CrCl 1-1.4: 70-90 mg/kg IV q24h CrCl 0.8-<1: 50-65 mg/kg IV q24h CrCl 0.6-<0.8: 80-105 mg/kg IV q48h CrCl 0.5-<0.6: 60-80 mg/kg IV q48h CrCl 0.4-<0.5: 50-65 IV q48h CrCl < 0.4: not recommended HD/CAPD: No data.

Fosfomycin sachet Susceptibility testing required for use other than a one time dose for uncomplicated cystitis ID Service consultation strongly recommended for use other than uncomplicated cystitis Refer to fosfomycin information on ASP website§

Adult Uncomplicated cystitis: 3g oral x 1 dose Complicated cystitis: 3 g oral q48h - - - - - - - - - - - - - - - - - - - - - - Pediatric Pediatric ≥15 yrs: SEE ADULT DOSE Pediatric ≤14 yrs: Uncomplicated cystitis: 2g oral x 1 dose Complicated cystitis: 2g oral every 2 days Pediatric ≤1 yr: Uncomplicated cystitis: 1g oral x 1 dose Complicated cystitis: 1g oral every 2 days

CrCl <50: same dose CrCl <50: 3g oral q72h - - - - - - - - - - - - - - - - - - - - - SEE ADULT DOSAGE If uncomplicated and CrCl<50: give same dose If complicated and CrCl<50: Age ≤14 yrs: 2g oral every 3 days Age ≤1 yr: 1g oral every 3 days

Ganciclovir Adult PO 1 g PO q8h IV Induction: 5 mg/kg IV q12h

Maintenance 5 mg/kg IV q24h - - - - - - - - - - - - - - - - - - - - - - Pediatric PO 30 mg/kg PO q8h IV Induction: 5 mg/kg IV q12h Maintenance: 5 mg/kg IV q24h

CrCl 50-69: 1.5 g PO q24h or 500 mg PO q8h CrCl 25-49: 1 g PO q24h CrCl 10-24: 500 mg PO q24h CrCl <10: 500 mg PO 3x/week CrCl 50-69: 2.5 mg/kg IV q12h CrCl 25-49: 2.5 mg/kg IV q24h CrCl 10-24: 1.25 mg/kg IV q24h CrCl <10:1.25 mg/kg IV 3x/week CrCl 50-69: 2.5 mg/kg IV q24h CrCl 25-49: 1.25 mg/kg IV q24h CrCl 10-24: 0.625 mg/kg IV q24h CrCl <10: 0.625 mg/kg IV 3x/week HD (PO/IV): Dose as CrCl <10 given after dialysis sessions. - - - - - - - - - - - - - - - - - - - - - No clear recommendations. CrCl 50-69: 2.5 mg/kg IV q12h CrCl 25-49: 2.5 mg/kg IV q24h CrCl 10-24: 1.25 mg/kg IV q24h CrCl <10:1.25 mg/kg IV 3x/week CrCl 50-69: 2.5 mg/kg IV q24h CrCl 25-49: 1.25 mg/kg IV q24h CrCl 10-24: 0.625 mg/kg IV q24h CrCl <10: 0.625 mg/kg IV 3x/week HD (PO/IV): Dose as CrCl <10 given after dialysis sessions.

Gentamicin

Adult Extended interval dosing (most indications*): 7 mg/kg once daily

• adjusted by serum level 6-14 hrs after start of infusion and Hartford nomogram (see PK training packet on ASP website§)

5 mg/kg/day may be used for UTIs - - - - - - - - - - - - - - - - - - - - - - Traditional dosing 1.5-2.5 mg/kg IV q8h Monitoring of serum levels is recommended.

Extended interval dosing frequency determined by levels/Hartford nomogram - - - - - - - - - - - - - - - - - - - - - - Traditional dosing (empiric, before levels): CrCl 51-90: 60-90% IV q8-12hŦ CrCl 10-50: 30-70% IV q12hŦ

*Refer to TNMC PK training packet on ASP website§ for exclusions to extended-interval dosing - - - - - - - - - - - - - - - - - - - - - - Pediatric Traditional dosing 1.5-2.5 mg/kg IV q8h

CrCl <10: 20-30% IV q24-48hŦ HD/CAPD: Dose according to levels.

Imipenem Adult 500 mg IV q6h For any other adult doses, use adjustment tables provided by Micromedex. - - - - - - - - - - - - - - - - - - - - - - Pediatric 15-25 mg/kg IV q6h

Adjusted by weight and CrCl. See Micromedex for adjustment. HD: Dose as CrCl <20. Dose after dialysis on dialysis days. CAPD: Dose as CrCl <10 - - - - - - - - - - - - - - - - - - - - - CrCl 41-70: 50% IV q6hŦ CrCl 21-40: 35% IV q8hŦ CrCl 6-20: 25% IV q12hŦ HD: Same dose q12h, given after dialysis on dialysis days. CAPD: Dose as CrCl 6-20

Indinavir Adult 800 mg PO q8h - - - - - - - - - - - - - - - - - - - - - - Pediatric: 500 mg/m2 PO q8h

No adjustment necessary. - - - - - - - - - - - - - - - - - - - - - No clear recommendations (<20% renal elimination).

Isoniazid Adult 5 mg/kg PO q24h (max dose 300 mg daily) Pediatric 10-15 mg/kg PO q24h (max dose 300 mg daily)

No adjustment necessary. HD/CAPD: Give dose after dialysis on dialysis days.

Itraconazole Adult 100-200 mg PO q12h Endemic fungi (Histoplasmata sp. Coccidioides sp. Blastomycetes sp.): 200 mg PO q8h x2days load then 200 mg PO q12h Pediatric 3-5 mg/kg PO q24h

No renal adjustment necessary. Avoid concomitant proton pump inhibitors or histamine receptor antagonists Suspension should be administered on an empty stomach Capsules should be administered with meal or acidic beverage Therapeutic drug monitoring should be considered. Goal steady-state trough obtained after 5-7 days of therapy for active disease >1mg/dL (sum of hyrdoxy-itraconazole and itraconazole)

Lamivudine (3TC) Adult 150 mg q12h OR 300 mg PO q24h

CrCl 30-49: 150 mg PO q24h CrCl 15-29: 150 mg PO x1, then 100 mg PO q24h CrCl 5-14: 150 mg PO x1, then 50 mg PO q24h

- - - - - - - - - - - - - - - - - - - - - - Pediatric 2-4 mg/kg PO q12h

CrCl <5: 50 mg PO x1, then 25 mg PO q24h (Note: because lamivudine is well-tolerated and available in 100 mg tablets, some practitioners will prescribe 50 mg PO daily (half of a 100 mg tablet) HD/CAPD: Dose as CrCl <5. - - - - - - - - - - - - - - - - - - - - - No clear recommendations (70% renal elimination).

Linezolid Adult 600 mg PO/IV q12h Pediatric 10 mg/kg PO/IV q8-12h

No adjustment necessary.

Lopinavir/ritonavir (LPV/r) Adult 400/100 mg PO q12h or 800/200 mg PO q24h (do not use once daily dosing in pts with >2 lopinavir resistance-associated substitutions, pregrancy, or patients receiving EFV, NVP, NFV, carbamazepine, phenobarbital, or phenytoin) Pediatric 10-13 mg (lopinavir component)/kg PO q12h

No clear recommendations, but adjustment probably not necessary (<3% renal elimination). Avoid once daily dosing in patients receiving HD

Maraviroc 150 mg PO q12h: when used concomitantly with a potent CYP3A inhibitor (with or without a CYP3A inducer) including protease inhibitors (except tipranavir/ritonavir), delavirdine, ketoconazole, itraconazole, clarithromycin, nefazadone, and telithromycin 600 mg PO q12h: when used concomitantly with a potent CYP3A inducer (without a strong CYP3A inhibitor) including efavirenz, etravirine, rifampin, carbamazepine, phenobarbital, and phenytoin. 300 mg PO q12h: when used concomitantly with tipranavir/ritonavir, nevirapine, raltegravir, all nucleoside reverse transcriptase inhibitors, and enfuvirtide

Caution in patients with hepatic impairment Caution in patients with CrCl<50

Meropenem Refer to dosing protocol on ASP website§

Adult Standard dose: 500 mg IV q6h Simple urinary tract infection: 500 mg IV q8h see next page

CrCl 25-49: 500 mg IV q8h CrCl 10-24: 500 mg IV q12h CrCl < 10: 500 mg IV q24h CrCl 25-49: 500 mg IV q12h CrCl 10-24: 250 mg IV q12h CrCl < 10: 500 mg IV q24h

Meningitis, cystic fibrosis, meropenem MIC of 4 mcg/mL 2 g IV q8h - - - - - - - - - - - - - - - - - - - - - - Pediatric 20-40 mg/kg IV q8h (q12h for neonates 7 days old and under)

CrCl 25-49: 2 g IV q12h CrCl 10-24: 1 g IV q12h CrCl < 10: 1 g IV q24h HD/CAPD: Dose as CrCl < 10 given after dialysis on dialysis days. - - - - - - - - - - - - - - - - - - - - - No clear recommendations for neonates 7 days old under. For those over 7 days old: CrCl 10-24: Same dose IV q12h CrCl < 10: Same dose IV q24h HD/CAPD: Dose as CrCl < 10 given after dialysis on dialysis days.

Metronidazole Adult 500 mg PO/IV q8h Pediatric 3.75-16.7 mg/kg PO/IV q6-8h (15-50 mg/kg/day)

Same for Adult & Pediatric CrCl <10 or severe hepatic dysfunction: consider 50% at same interval if >14 day durationŦ HD/CAPD: Give after dialysis on dialysis days.

Micafungin Adult 50-150 mg IV q24h - - - - - - - - - - - - - - - - - - - - - - Pediatric 1-4.5 mg/kg IV q24h

No adjustment necessary. - - - - - - - - - - - - - - - - - - - - - No clear recommendations.

Minocycline Adult 100 mg PO q12h (200 mg PO qhs) Pediatric *not to be used in children < 8yo 2 mg/kg PO q12h (4 mg/kg PO qhs)

No adjustment necessary.

Moxifloxacin Adult 400 mg PO/IV q24h Safety and efficacy not established in pediatrics.

No adjustment necessary.

Nelfinavir (NFV) Adult 1250 mg PO q12h Pediatric 45-55 mg/kg PO q12h

No clear recommendations, but adjustment probably not necessary (<2% renal elimination).

Nevirapine (NVP) Adult 200 mg PO q24h x14 days then increase to 200 mg PO q12h (immediate release tab) or 400 mg PO q24h (extended-release tab) Pediatric 4-7 mg/kg PO q12h

No adjustment necessary. Give dose after dialysis on dialysis days. Avoid if naïve and CD4 count > 250 cells/mm3 in women and 400 cells/mm3 in men

Nitrofurantoin Adult 50-100 mg PO q12h Pediatric 1.25-1.75 mg/kg PO q6h

CrCl <50, HD/CAPD: Use is not recommended – will not reliably reach useful concentrations in urine and will have increased risk of toxicity

Oseltamivir Adult 75 mg PO q12h Pediatric 30-75 mg PO q12h

Same for Adult & Pediatric CrCl 10-30: same dose PO q24h CrCl <10, HD/CAPD: No data.

Oxacillin Adult Methicillin-susceptible S. aureus bloodstream infections: 2g IV q4h Non-bloodstream infections 1-2g IV q4-6h Pediatric 16.7-50 mg/kg IV q4-6h (50-100 mg/kg/day)

No adjustment necessary.

Penicillin G

Adult 2 – 4 million units IV q4h - - - - - - - - - - - - - - - - - - - - - - Pediatric 25,000-100,000 units/kg IV q4-6h (100,000-400,000 units/kg/day)

CrCl 10-50: 75% IV at same intervalŦ CrCl <10: 2-4 million units q8h HD: Dose as CrCl <10. Give dose after dialysis on dialysis days. CAPD: Dose as CrCl <10. - - - - - - - - - - - - - - - - - - - - - CrCl 10-30: same dose q8h CrCl <10: same dose q12h HD: Dose as CrCl <10. Give dose after dialysis on dialysis days. CAPD: Dose as CrCl <10.

Penicillin VK Adult 250-500 mg PO q6-8h Pediatric 6.25-16.7 mg/kg PO q6-8h (25-50 mg/kg/day)

No adjustment necessary. HD: Give dose after dialysis on dialysis days.

Pentamidine Adult 4 mg/kg IV q24h - - - - - - - - - - - - - - - - - - - - - - Pediatric 4 mg/kg IV q24h

No adjustment necessary. - - - - - - - - - - - - - - - - - - - - - CrCl 10-30: same dose q36h CrCl <10: same dose q48h

Piperacillin Adult 3-4 g IV q4-6h - - - - - - - - - - - - - - - - - - - - - - Pediatric 33.3-75 mg/kg IV q4-6h (200-300 mg/kg/day)

CrCl 10-50: same dose IV q6-8h CrCl <10: same dose IV q8h HD: Dose as CrCl <10. Give dose after dialysis on dialysis days. CAPD: Dose as CrCl <10. - - - - - - - - - - - - - - - - - - - - - CrCl 20-40: same dose q8h CrCl <20: same dose q12h HD: Dose as CrCl <20. Give dose after dialysis on dialysis days. CAPD: Dose as CrCl <20.

Piperacillin/tazobactam See dosing protocol on ASP website§

Adult Extended 4hr infusion (standard at TNMC): 4.5 g IV q8h, infused over 4h Traditional, 30 minute infusion 3.375 g IV q6h or 4.5 g IV q8h Anti-pseudomonal dosing: 4.5 g IV q6h - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Pediatric Extended infusion: >2kg and ≤40kg, over 40kg per adult dosing (all doses based on piperacillin component) 0-7 days: 100 mg/kg q12h, infused over 4h 8-28 days: 100 mg/kg q8h, infused over 4h >28 days: 100 mg/kg q6h, infused over 4h NOTE: all doses must be infused over 4 hours, except in NICU patients Traditional, 30 minute infusion 50-133.3 mg/kg (piperacillin) IV q6-8h [150-400mg/kg/day (piperacillin)]

Extended 4hr infusion (standard at TNMC): CrCl <20, HD/CAPD: 4.5 g IV q12h, infused over 4h Traditional, 30 minute infusion CrCl 20-40: 2.25 g IV q6h CrCl <20: 2.25 g IV q8h CrCl 20-40: 3.375 g IV q6h CrCl <20: 2.25 g IV q6h HD: Dose as CrCl <20 + 0.75 g IV after dialysis. CAPD: Dose as CrCl <20. - - - - - - - - - - - - - - - - - - - - - - - - - - - CrCl 20-40: 70%, same intervalŦ CrCl <20, HD/CAPD: 70%, infuse q12h over 4 hoursŦ CrCl 20-40: 70% IV q6hŦ CrCl <20: 70% IV q8hŦ HD/CAPD: No recommendations

Posaconazole Restricted to review and approval by the ID Service or the Hematology/Oncology Service

Adult & Pediatric (≥13 y.o.) 200-800 mg PO q6-24h (q6h dosing preferred for active disease due to saturable absorption) (Maximum 800 mg q24h) Take with high fat meal/nutritional supplement. Avoid concomitant use of proton-pump inhibitors & histamine receptor antagonists

No adjustment necessary. Therapeutic drug monitoring suggested. Obtain steady state trough (7 days). Goal for active disease is >1.25 mg/L

Primaquine Adult 15-30 mg (primaquine base) PO q24h Pediatric 0.3 mg/kg (primaquine base) PO q24h

No clear recommendations, but adjustment probably not necessary (<1% renal elimination).

Pyrazinamide Adult 25 mg/kg PO q24h (max dose 2gm PO for daily therapy) - - - - - - - - - - - - - - - - - - - - - - Pediatric 10-40 mg/kg PO q12-24h (max dose 2gm PO for daily therapy) (20-40 mg/kg/day)

CrCl <10: 15 mg/kg PO q24h HD: 25 mg/kg PO after each dialysis session. CAPD: No data. - - - - - - - - - - - - - - - - - - - - - CrCl <10, HD: 40 mg/kg PO 3x/week CAPD: No data.

Pyrimethamine Adult 50-100 mg PO q24h

Pediatric 1 mg/kg PO q12h

No adjustment necessary.

Quinupristin/dalfopristin Adult & Pediatrics 7.5 mg/kg IV q8h

No adjustment necessary. No data for pediatrics.

Raltegravir (RAL) Adult and adolescent ≥16yrs 400mg PO q12H With rifampin: 800 mg PO q12h Pediatric Not established in <16yrs

No adjustment necessary.

Ribavirin Adult 400-600 mg PO q12h Pediatric 200-400 mg PO q12h

Same for Adult & Pediatric CrCl <50: Contraindicated.

Rifabutin Adult 300 mg PO q24h Pediatric 5 mg/kg PO q24h

No adjustment necessary.

Rifampin Adult Mycobacterial disease: 10 mg/kg (600 mg) PO daily Prosthetic valve infective endocarditis: 300 mg PO/IV q8h Pediatric 10-20 mg/kg PO/IV q24h

No adjustment necessary.

Rilpivirine (RVP)

Adult: 25 mg daily Do not coadminister with H2RA, PPI, or antacids

No dose adjustment necessary

Rimantidine Adult 100 mg PO q12h - - - - - - - - - - - - - - - - - - - - - - Pediatric 5 mg/kg PO q24h

CrCl <10: 100 mg PO q24h HD/CAPD: No data. - - - - - - - - - - - - - - - - - - - - - - No clear recommendations.

Ritonavir (RTV) Adult 100 mg PO q12h (in combination with another protease inhibitor) 100 mg PO q24h when coadministered with atazanavir or daily darunavir Pediatric 400 mg/m2 PO q12h

No adjustment necessary.

Saquinavir (SQV) Adult 1000 mg PO q12h (w ritonavir 100 mg PO q12h) Not approved for use in pediatrics.

No data, but negligible renal clearance.

Stavudine (D4T) Adult <60 kg: 30 mg PO q12h ≥60 kg: 40 mg PO q12h - - - - - - - - - - - - - - - - - - - - - - Pediatric 1 mg/kg PO q12h

CrCl 26-50: 50% PO q12hŦ CrCl 10-25 and HD: 50% PO q24hŦ Give after dialysis on dialysis days. CAPD: No data. - - - - - - - - - - - - - - - - - - - - - CrCl 25-50: 50% PO q12hŦ CrCl <25: 50% PO q24hŦ HD: Dose as CrCl <25. Give after dialysis on dialysis days. CAPD: No data.

Sulfadiazine Adult 2-4 g PO in 3-6 divided doses Pediatric 37.5 mg/kg PO q6h

No data.

Tenofovir (TDF) Adult 300 mg PO q24h Pediatric 8 mg/kg PO q24h

Same for Adult & Pediatric CrCl 30-49: 300 mg q48h CrCl 10-29: 300 mg twice weekly CrCl <10: No data HD: 300 mg once weekly, given after dialysis if on a dialysis day. CAPD: No data.

Tetracycline Adult 250-500 mg PO q6h - - - - - - - - - - - - - - - - - - - - - - Pediatric *not to be used in children < 8yo 6.25-12.5 mg/kg PO q6h

CrCl >50-90: same dose PO q8-12h CrCl 10-50: same dose PO q12-24h CrCl <10: same dose PO q24h HD/CAPD: No data. - - - - - - - - - - - - - - - - - - - - - CrCl 50-80: same dose q8h CrCl 10-49: same dose q12h CrCl <10: same dose q24h HD/CAPD: No data.

Ticarcillin Adult 3 g IV q4h - - - - - - - - - - - - - - - - - - - - - - Pediatric 25-75 mg/kg IV q4-6h (150-300 mg/kg/day)

CrCl 30-60: 2 g IV q4h CrCl 10-30: 2 g IV q8h CrCl <10: 2 g IV q12h HD: 2 g IV q12h with a 3 g IV supplement after each dialysis. CAPD: Dose as CrCl <10. - - - - - - - - - - - - - - - - - - - - - CrCl 10-30: same dose q8h CrCl <10: same dose q12h HD: Same dose 12h with dosing after dialysis. CAPD: Dose as CrCl <10.

Tigecycline (Restricted to ID Service review and approval)

Adult 100 mg IV load, then 50 mg IV q12h Pediatric Safety and efficacy not established in pediatrics.

Adults & Peds: Renal dysfunction: no adjustment necessary. Hepatic dysfunction, Child Pugh C: 100 mg IV load followed by 25 mg IV q12h

Tipranavir (TPV) Adult 500 mg PO q12h (coadministered with ritonavir 200 mg PO q12h) Pediatric Safety and efficacy not established in pediatrics.

No data, but negligible renal clearance.

Tobramycin

Adult & Pediatric Extended interval dosing (most indications*): 7 mg/kg once daily

• adjusted by serum level 6-14 hrs after start of infusion and Hartford nomogram (see PK training packet on ASP website§)

5 mg/kg/day may be used for UTIs - - - - - - - - - - - - - - - - - - - - - - Traditional dosing 1.5-2.5 mg/kg IV q8h Monitoring of serum levels is recommended. *Refer to TNMC PK training packet on ASP website§ for exclusions to extended-interval dosing. - - - - - - - - - - - - - - - - - - - - - - Pediatric Traditional dosing 1.5-2.5 mg/kg IV q8h

Extended interval dosing frequency determined by levels/Hartford nomogram - - - - - - - - - - - - - - - - - - - - - - Traditional dosing (empiric, before levels): CrCl 51-90: 60-90% IV q8-12hŦ CrCl 10-50: 30-70% IV q12hŦ CrCl <10: 20-30% IV q24-48hŦ HD/CAPD: Dose according to levels.

Trimethoprim/sulfamethoxazole (TMP/SMX) 1 Bactrim DS tablet = 160mg(TMP)/800mg(SMX) Bactrim oral suspension = 40mg/5 mL (TMP)/ 200mg/5 mL (SMX)

Adult PO Simple urinary tract infection: 1 Bactrim DS tablet PO q12h Skin/skin structure infection/other infections: 1-2 Bactrim DS tablets PO q12h PCP treatment:15-20 mg/kg/day* (trimethoprim componenent) PO divided q6-8h IV Skin/skin structure infection: 10 mg/kg/day (ideal body weight) trimethoprim component divided q12h Severe Infections/PCP 15-20 mg/kg/day* (trimethoprim component) IV divided q6-8h *Ideal body weight, consider an adjusted body weight in severely ill obese patients. See equation for adjusted body weight at end of document - - - - - - - - - - - - - - - - - - - - - - Pediatric PO/IV

Adults and Pediatrics, PO/IV Simple UTI, skin/skin structure, other infections CrCl <30: 50% of usual daily dose divided q12-24h HD: Dose as CrCl<30, administer after HD on HD days PCP treatment: CrCl 15-30: 15-20 mg/kg/day (trimethoprim component) q6-8h for 48 hours followed by 50% of usual daily dose divided q12h CrCl <15: 50% of usual daily dose divided q12h HD: Dose as CrCl<15, administer after HD on HD days

Simple urinary tract infection” 5 mg/kg (TMP) PO q12h Skin/skin structure infection/other infections: 10 mg/kg/day (TMP) IV divided q12h PCP treatment: 15-20 mg/kg/day (TMP) IV divided q6-8h

Valacyclovir Adult 2 g PO q12h 1 g PO q8h 1 g PO q12h 1 g PO q24h 500 mg PO q12h 500 mg PO q24h Safety and efficacy not established in pediatrics.

CrCl 30-49: 1 g PO q12h CrCl 10-29: 500 mg PO q12h CrCl <10: 500 mg PO q24h CrCl 30-49: 1 g PO q12h CrCl 10-29: 1 g PO q24h CrCl <10: 500 mg PO q24h CrCl 30-49: no adjustment CrCl 10-29: 1 g PO q24h CrCl <10: 500 mg PO q24h CrCl 30-49: no adjustment CrCl 10-29: 500 mg PO q24h CrCl <10: 500 mg PO q24h CrCl 30-49: no adjustment CrCl 10-29: 500 mg PO q24h CrCl <10: 500 mg PO q24h CrCl 30-49: no adjustment CrCl 10-29: 500 mg PO q48h CrCl <10: 500 mg PO 48h HD: Dose as CrCl <10. Give after dialysis on dialysis days. CAPD: 500 mg PO q48h

Valganciclovir Adult Treatment, induction 900 mg PO q12h Treatment, maintenance 900 mg PO q24h Prophylaxis (dosing at TNMC) 450 mg PO q24h

Adult Treatment, induction CrCl 40-59: 50% PO same intervalŦ CrCl 25-39: 50% PO q24hŦ CrCl 10-24: 50% PO q48hŦ CrCl <10, HD/CAPD: Use is not recommended. Treatment, maintenance CrCl 40-59: 50% PO same intervalŦ CrCl 25-39: 50% PO q48hŦ CrCl 10-24: 50% PO twice weeklyŦ CrCl <10, HD/CAPD: Use is not recommended. Prophylaxis CrCl 25-39: same dose PO q48hŦ CrCl 10-24: 450 mg PO twice weeklyŦ CrCl <10, HD/CAPD: Use is not recommended.

- - - - - - - - - - - - - - - - - - - - - - Pediatric (Usual dosing at TNMC) Treatment 14 mg/kg PO q12h Maintenance or Prophylaxis 14 mg/kg PO daily

- - - - - - - - - - - - - - - - - - - - - - Pediatric Treatment CrCl 40-59: 50% PO same intervalŦ CrCl 25-39: 50% PO q24hŦ CrCl 10-24: 50% PO q48hŦ CrCl <10, HD/CAPD: Use is not recommended. Maintenance or Prophylaxis CrCl 40-59: 50% PO same intervalŦ CrCl 25-39: 50% PO q48hŦ CrCl 10-24: 50% PO twice weeklyŦ CrCl <10, HD/CAPD: Use is not recommended.

Vancomycin IV

Adult Standard*: 15-20 mg/kg IV q12h Consider loading dose in critically ill patients of 25 mg/kg x1dose - - - - - - - - - - - - - - - - - - - - - - Pediatric 15-20 mg/kg IV q6h*

*Dosing, therapeutic goals, and monitoring should be individualized for each patient; consult pharmacy. Refer to PK training packet on ASP website§ Troughs of 15-20 mcg/mL are recommended for patients with MRSA bloodstream infections, endocarditis, meningitis, pneumonia, osteomyelitis, and septic arthritis. - - - - - - - - - - - - - - - - - - - - - CrCl 70-89: same dose q8h CrCl 46-69: same dose q12h CrCl 30-45: same dose q18h CrCl 15-29: same dose q24h CrCl <15, HD/CAPD: Measure trough levels to determine when to dose.

Vancomycin PO 125 mg PO q6h No renal adjustment necessary

Voriconazole Adult & Pediatric (>12 yo)* PO/IV Active disease: Loading dose of 6mg/kg PO/IV q12h x2doses, then 4 mg/kg PO/IV q12h Prophylaxis: 200 mg PO q12h (100 mg q12h if <40kg) Therapeutic drug monitoring is suggested. Voriconazole target trough at steady-state is 2 - 5.5 mg/L.

Hepatic dysfunction (Child Pugh A or B): 6mg/kg q12h x2doses then 50% of normal daily dose. Renal dysfunction: PO No adjustment necessary. IV CrCl <50, HD/CAPD: Caution with IV formulation due to accumulation of cyclodextrin vehicle.

Zanamivir IH Adult and Pediatric ≥7 years Treatment: Two inhalations (10 mg total) twice daily for 5 days Adult and Pediatric ≥5 years Prophylaxis: Two inhalations (10 mg total) once daily for daily for 10 days

No adjustment necessary.

Zidovudine (AZT) Adult PO: 300 mg PO q12h IV for intrapartum administration: 2 mg per kg body weight intravenously over 1 hour, followed by continuous infusion of 1 mg per kg body weight per hour. Refer to DHHS guidelines for dosage and duration for continuation post-partum - - - - - - - - - - - - - - - - - - - - - - Pediatric PO: 160 mg/m2 PO q8h IV: 120 mg/m2 IV q6h

CrCl <15, HD/CAPD: 100 mg PO q6-8h. Give after dialysis on dialysis days. CrCl <15, HD/CAPD: 1 mg/kg IV q6-8h. Give after dialysis on dialysis days. - - - - - - - - - - - - - - - - - - - - - No data.

*use Cockroft-Gault equation for patients ≥ 18 years old; use Schwartz method for patients < 18 years old ŦWhen the recommended renal dosage adjustment is listed as a percentage change, this indicates that X% of the originally ordered dose should be given, NOT that the dose should be decreased by X%. For example, an adult with a CrCl between 10-50 ml/min would receive 30-70% of the originally ordered amikacin dose §Antimicrobial stewardship program (ASP) website: www.nebraskamed.com/asp Adults: Estimate of Creatinine Clearance using Cockroft-Gault equation

CrCl (ml/min) = (140 – age) * IBW x 0.85(for females only) 72 * Scr

Scr = serum creatinine concentration in mg/dL; if patient is > 65 years old and Scr < 1 mg/dL, round up to 1.0 IBW = ideal body weight

IBW (males) = 50 + (2.3 x inches > 5 feet) IBW (females) = 45.5 + (2.3 x inches > 5 feet)

NOTE: use actual body weight if less than ideal body weight Adjusted body weight: ideal body weight + 0.4(actual body weight – ideal body weight)

Pediatrics: Estimate of Creatinine Clearance using Schwartz’s equation

CrCl (ml/min) = K x L/Scr K = Constant of proportionality that is age specific Age K Preterm infants up to 1 year 0.33 Full-term infants up to 1 year 0.45 1-12 years 0.55 13-17 years female 0.55 13-17 years male 0.7 L = length or height in cm Scr = serum creatinine concentration in mg/dL Selected References

1. Gilbert DN, et al. The Sanford Guide to Antimicrobial Therapy, 38th Edition, 2008. 2. MICROMEDEX® Healthcare Series, 2012. 3. Livornese LL, et al. Use of antibacterial agents in renal failure. Infectious Disease Clinics

of North America. 2004;18:551-79. 4. Taketomo CK, et al. Pediatric Dosage Handbook, 12th Edition, 2005. 5. Aronoff GR, et al. Drug Prescribing in Renal Failure, 4th Edition, 1999.

Dates Reviewed: Antimicrobial Stewardship Program draft – October 2005, September 2008, January 2012 Medical Staff Pharmacy & Therapeutics Committee approved – April 2006, September 2008, October 2010, March 2012 Medical Staff Executive Committee approved – May 2006 Updated March 2012